FSA 4IIII Power Meter 840031049681 Sl 175MM 39/53T

( Brand: Fsa ), ( Type: Crank Arm ), ( Sport/activity: Cycling ), ( UPC: 840031049681 )

Review FSA Sl k Power Meter 175mm 39/53t

The FSA SL-K Power Meter from 4iiii is a high-performance crankset that integrates a powerful and accurate power measurement system. This particular model is designed for a 175mm crank length and is compatible with 39/53t chainrings.

The SL-K Power Meter crankset is built using FSA's SL-K carbon arms, which provide an optimal balance of stiffness and weight savings. The power meter itself is integrated into the left crankarm, using 4iiii's precision strain gauge technology to measure power output with exceptional accuracy.

The power measurement system is ANT and Bluetooth compatible, allowing you to pair it with a wide range of cycling computers and smartphones. The integrated rechargeable battery provides up to 30 hours of ride time, and can be easily recharged using the included USB charging cable.

The 39/53t chainring configuration is ideal for riders who prefer a compact gear setup, making it a great choice for climbers and those who prioritize easier gearing. The power meter is also easy to install, with no need for additional spacers or adapters.

The SL-K Power Meter from 4iiii is an excellent choice for any serious cyclist looking to gain valuable insights into their power output and training data. Its sleek design, advanced technology, and ease of use make it a must-have addition to any high-performance road or triathlon bike.

The FSA SL-K Carbon Road Power Meter with model number 840031049681 and compatibility for 175mm cranks with 39/53t chainrings is a high-performance power meter designed for serious cyclists. Here are some pros and cons to help you make an informed decision about purchasing this power meter:

1. Precise Power Measurement: The FSA SL-K power meter offers accurate and reliable power measurement, providing valuable data for training and racing.

2. Integrated Design: The power meter is seamlessly integrated into the crankarms, resulting in a sleek and aesthetically pleasing design.

3. Compatibility: The power meter is compatible with a wide range of bicycle frames and bottom brackets, making it a versatile option for many cyclists.

4. Lightweight: The carbon fiber crankarms help keep the weight of the power meter low, making it an attractive option for weight-conscious riders.

5. Bluetooth and ANT Connectivity: The power meter supports both Bluetooth and ANT connectivity, allowing it to be used with a variety of training apps and devices.

1. Cost: The FSA SL-K power meter is a high-end option and comes with a premium price tag.

2. Battery Life: The power meter's battery life is reported to be around 30 hours, which may require frequent charging for some users.

3. Installation: Installing the power meter may require some technical expertise, and it may not be as straightforward as some other power meters on the market.

4. Compatibility with Some Bottom Brackets: The power meter may not be compatible with all bottom brackets, so it's important to check the compatibility before making a purchase.

In conclusion, the FSA SL-K Carbon Road Power Meter is a high-performance and accurate power meter with a sleek design and compatibility with a wide range of bicycles. However, it comes with a premium price tag and may require some technical expertise for installation. If you're a serious cyclist looking for precise power measurement and aren't put off by the cost or installation requirements, then the FSA SL-K power meter could be an excellent investment for your training and racing. If you're looking for a more budget-friendly option or one that's easier to install, there may be other power meters on the market that better suit your needs. Ultimately, it's important to weigh the pros and cons carefully before making a decision.

Details:

Up for sale is a FSA SL-K 4IIII Power Meter Part No. This is a New Old Stock NOS item, meaning it brand new and unused, but has been sitting unused for some time. As a result, there may be some dust and minor scratches from storage, but it has never been installed or used on bike. Brand new, unused, but has been sitting unused and may have some dust minor scratches from storage.

Specifications: model: FSA SL-K 4IIII Power Meter. Part Number: 030. Material: Carbon fiber crank arms with aluminum spindle

Connectivity: ANT and Bluetooth Smart. The crankiest and power meter are fully functional, the scratches purely cosmetic do not affect performance or integrity of product.

part #: 840031049681 prices

• $257.25-$368.91

specifications velocipedespark:

• brand: Fsa
• type: Crank Arm
• sport/activity: Cycling
• upc: 840031049681

returns velocipedespark:

• policy: No Returns

seller velocipedespark:

• # reviews: 1128
• city: Compton, California
• rating: 100.0%

shipping velocipedespark:

• carrier: USPS
• transit: 3-8 Days
• service: USPS Priority Mail
• cost: $0.00
• type: Calculated
• class: Expedited

general velocipedespark:

• condition: New
• Cycling > Bicycle Electronics > Power Meters

payments velocipedespark:

• credit card: Diners-club
• other
• wallet: Google-pay

offer velocipedespark:

• started: August 11, 2025
• availability: In Stock
• options: Ship-to-home
• sold: 0
• quantity: 1

Fsa 4IIII Is Similar To:

• Srm 4-bolt Not Working Pm5 Fits Fsa 130bcd 5-bolt Spider Power Meter (35% similar) Condition: the power meter does not work currently. We note and show all significant cosmetic defects with specific photos. This includes details like ultrasonic cleaning of cassettes, bar-tape adhesive removal off handlebars, even disassembling pulley wheels and chain rings for on those really...(June 19th, 2024)
• Fsa Spm-1 Stages Carbon Crank 165mm Arm Bb386 Evo Power Meter (37.2% similar) Check the pics. Gently used and ready to go.used only on my racing Ty bike for maybe 1000 miles. Happy riding. Stages BB386 Eco power crank arm...(August 20th, 2024)
• Stages 818889021234 Gen 3 Carbon Power Meter Left Crank Arm Fsa Sram Bb30 172.5mm (37.6% similar) Material: aluminum. Crank length : 172.5MM. Brand: stages, model: gen 3 carbon power meter. The wobbly track stand has used its best efforts to inspect the item for sale and create furnish photographs that fairly adequately depict type, condition image of goods at time...(October 1st, 2024)
• Pioneer 573214165606 Power Meter Computer Mount For Fsa Vision Handlebar And Gopro Nos Retro (22.2% similar) Pioneer power meter computer mount for Fsa vision handlebar copra, sold as in photos, sent USPS ground advantage...(June 22nd, 2025)
• Fsa 840031049728 Sl-k 4iiii Power Meter 175mm 34 50t (92.3% similar) Up for sale is a Fsa sl-k 4 iiii power meter part no. Material: carbon fiber crank arms with aluminum spindle. Part number: 030. Condition: brand new, unused, but has been sitting unused and may have some dust minor scratches from storage. The crankiest and power meter are fully...(August 11th, 2025)
• Stages 818889021197 Power Meter Crank Arm Fsa Sl-k Bb30 172.5mm New (42% similar) Retail is $539 this a new stages left crank arm power meter for an Fsa sl-k BB30 crank in 172.5MM length ...(December 20th, 2025)